Krell Illusion Preamplifier Technical Specifications
Inputs
2 pr. CAST via 4-pin bayonet connectors
2 pr. balanced via XLR connectors
3 pr. single-ended via RCA connectors
Tape input
1 pr. single-ended via RCA connector
Main outputs
2 pr. CAST via 4-pin bayonet connectors
1 pr. balanced via XLR connector
1 pr. single-ended via RCA connector
Subwoofer outputs
1 pr. balanced via XLR connector
1 pr. single-ended via RCA connector
Tape outputs
1 pr. single-ended via RCA connector,buffered
Control inputs
1 RS-232 input via a 9-pin D-subminiature connector
1 remote IR detector input via a 3-conductor 3.5 mm connector
1 12 VDC trigger input via 3.5 mm connector
1 preamplifier link via an RJ-45 connector
Control outputs
2 individually programmable 12 VDC trigger outputs via 3.5 mm connectors
1 preamplifier link via an RJ-45 connector
Power output
1 phone power output (±20 VDC) for KPE via a 9-pin D-subminiature connector
Frequency response
20 Hz to 20 kHz ± 0.02 dB
0.35 Hz to 720 KHz +0, -3 dB
Single-ended: 8 V RMS
Total harmonic distortion plus noise
Balanced Output: <0.003%, 20 Hz to 20 kHz, 4 V RMS or 4mARMS
Input impedance
CAST: 25 Ohms
Balanced: 40 k Ohms
Single-ended: 20 k Ohms
Output impedance
CAST: >1 MΩ
Balanced: 250Ω
Single-ended: 125Ω
Gain
12 dB (CAST or balanced output)
6 dB (single-ended output)
Volume control
Balanced, current-mode, 16-bit, discrete R-2R ladder
Input overload
Balanced, current-mode, 16-bit, discrete R-2R ladder
Output overload
CAST: 16 rnA RMS
Balanced: 16 V RMS
Single-ended: 8 V RMS
Signal-to-noise ratio
4 V RMS balanced or 4 mA RMS CAST output
Wideband, unweighted: >100 dB
“N’ weighted: >109 dB
Power consumption
Standby: 60 W
Power on: 65 W
Power on, with KPE: 75 W
Dimensions
Preamplifier only:
17.3 in.W x 3.8 in. H x 18.3 in. D
43.8 cm W x 9.7 cm H x 46.4 cm D
Power supply only:
17.3 in. W x 3.8 in. H x 17.7 in. D
43.8 cm W x 9.7 cm H x 44.8 cm D
Preamplifier and power supply:
17.3 in. W x 7.6 in. H x 18.3 in. D
43.8 cm W x 19.2 cm H x 46.4 cm D
Weight
Shipped: 61 lbs., 27.6 kg
Preamplifier only: 18 lbs., 8.1 kg
Power supply only: 28 lbs., 12.7 kg